Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Servo Piston





(1) Band servo piston stem
(2) Spring
(3) Lathe cut seal ring
(4)Band servo piston (1-2)
(5) Lathe cut seal ring
(6) 0-ring
(7) Band servo retainer
(8) 0-ring
(9) Spring
(10) Retainer
(11) Snap ring
(12) Lathe cut seal ring
(13) Band servo piston (3-4)
(14) O-ring
(15) O.D. servo retainer
(16) Snap ring

A: DISASSEMBLY
1. Remove the spring.
2. Remove the band servo piston (3-4).
3. While compressing the retainer from above, remove the snap ring. Then remove the retainer, spring and stem.
4. Take out the band servo piston (1-2).

B: INSPECTION
1. Check each component for harmful cuts, damage, or other faults.
2. Check the O-ring and lathe cut ring for damage.

C: ASSEMBLY
1. Install the band servo piston (1-2) to the retainer, and insert the stem.
2. Put the spring and retainer on the piston. Fit the. snap ring securely while compressing the spring.
3. Install the band servo piston (3-4).
4. Install the spring securely to the band servo piston (1-2).

CAUTION:
- Many different O-rings and lathe cut rings are used. Be careful not to confuse them when installing.
- Be careful not to damage O-rings and lathe cut rings.